The necessity for a solution to the fish culture problem was long ago felt in the crowded districts of Europe. The economic demand that food be produced for the ever increasing population of these districts resulted in directing attention to the comparatively waste small inland ponds and lakes, once plentifully inhabited by food fish but now almost completely exhausted. It was to meet this situation, then, that the pioneer fish culturists began working at methods to raise the waste waters to their former degree of productive usefulness in yielding food.
Proceedings of the Iowa Academy of Science
©1923 Iowa Academy of Science, Inc.
Ryke, Willis De
"Fish Foods in Relation to Fish Culture,"
Proceedings of the Iowa Academy of Science, 30(1), 163-166.
Available at: https://scholarworks.uni.edu/pias/vol30/iss1/35